Enable /bigobj on windows builds to fix build failures.

11 jobs for enable_msvc_bigobj in 4 minutes and 5 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #54352
VS2013
VS2013-32-bit

00:00:58

passed #54351
VS2013
VS2013-64-bit

00:00:56

passed #54350
VS2015
VS2015-32-bit

00:01:22

passed #54349
VS2015
VS2015-64-bit

00:01:07

passed #54348
VS2017
VS2017-32-bit

00:01:13

passed #54347
VS2015
VS2017-64-bit

00:01:43

passed #54344
Linux
clang-c++11

00:03:47

passed #54346
Linux
cppcheck

00:00:47

passed #54353
Linux
doc

00:00:22

passed #54343
Linux
gcc-c++11

00:01:57

passed #54345
Apple
macos-c++11

00:02:49